The Venkatam hill is believed to be a part of the celestial Mount Meru brought to the earth from Vaikuntam by Garuda (Lord's vehicle), say the Puranas. The Hills are said to be a manifestation of Adi Sesha (the cosmic serpent). The Seven hills of the Tirumala are said to represent the seven hoods of Adi Sesha.
Many Alvars, Vaishnavacharyas and saints have praised the Tirumala Hill with great devotion. Tirumala Mambi, a descendent of the great ascetic Narada, spent his whole life in serving the Lord.
References to the tirumala also found in several of Puranas. Tirumala is one of the 108 sacred shrines of the Sri Vaishanava tradition. According to the Puranas, Lord Vishnu stayed on the earth for some time in the Avatar of Swetha Varaham and rose out of pushkarini as Swayambhuva. His spouse Lakshmi Devi appeared in Thirucharnur. This Swwtha Varaha Avatharam was installed in the temple situated to the west of Swamy Pushkarni. The great religious leader Ramanujacharya visited this shrine on a pilgrimage and systematised the process of worship in accordance with the SriVaishnava that continues to date.
ALWARS Nammalvar (3000 B.C) extols Lord Venkateswara as the veritable aushadam (medicine) for curing the disease of samsara in the areas of birth and death. Saint Kulasekhara Alvar prays to the Lord Srinivasa to grant him even the lowest birth in the holy Tirumala Hills—as a fish in the sacred Swami Pushkarini, or as a tree, or as anything on the golden hills of Lord Venkateswara (emberumaan ponmalai mEl EdhEnum avEnE).